The PDI I found and used online was like 8 pages. Be thorough.
http://www.rvforum.net/miscfiles/PDC_AB.pdf
Be sure to bring some basic tools with you as well. I recommend:
Flashlight
Screw driver
IR Thermometer (to check hot water temp, furnace output, AC output, fridge/freezer operation)
Multi Meter
AC Receptacle Tester
Air Pressure Guage
Box of matches if needed to test stove/grill
Hope that helps!